Compilare: main.cpp: In function 'void DFS(int, int, int)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[x].size(); i++)//parcurc toti vecinii lui x ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:73:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i< c.size(); i++) ~^~~~~~~~~~ main.cpp:77:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<c[i].size(); j++) ~^~~~~~~~~~~~